نتایج جستجو برای: apical patency

تعداد نتایج: 37644  

2016
Uri Kopylov Artur Nemeth Alba Cebrian Gabriele Wurm Johansson Henrik Thorlacius Ignacio Fernandez-Urien Sainz Anastasios Koulaouzidis Rami Eliakim Ervin Toth

BACKGROUND AND AIMS The patency capsule is designed to evaluate the patency of the small bowel before administration of small-bowel capsule endoscopy (SBCE) in patients at high risk of retention. The utilization of a patency capsule may be associated with a risk of symptomatic retention, but very few cases have been reported to date. The aim of our study was to describe our experience with this...

2015
Brendon L. Neuen Richard A. Baer Frank Grainer Murty L. Mantha

This study aims to report the outcomes of nitinol and polytetrafluoroethylene covered stent placement to treat hemodialysis arteriovenous access stenosis at a single center over a five-year period. Clinical and radiological information was reviewed retrospectively. Poststent primary and secondary patency rates were determined using Kaplan-Meier analysis. Ten clinical variables were subjected to...

2015
Ragada El-Damanawi Stephanie Kershaw Gary Campbell Thomas F. Hiemstra

BACKGROUND Arteriovenous dialysis access may be lost due to stenosis and thrombosis. Patency may be restored by thrombectomy or thrombolysis, but this is often not undertaken when the presentation is delayed. The success rate of delayed intervention is largely unknown. METHODS In this single-centre study, we identified all instances of arteriovenous vascular access (VA) failure treated with a...

2015
Ju-Young Moon Hyae Min Lee Sang-Ho Lee Tae-Won Lee Chun-Gyoo Ihm Young-Il Jo Sang-Woong Han Sug-Gyun Shin

BACKGROUND The patency of arteriovenous access is important for stable and effective hemodialysis, and long-term technical survival is best achieved with a native arteriovenous fistula (AVF). However, maintaining AVF patency remains a challenge. This study was designed to determine the independent prognostic factors for AVF patency according to hemodialysis duration. METHODS The primary study...

2017
Luciano A Favorito Helce Riberio Julio-Junior Francisco J Sampaio

Objectives To assess the incidence of testicular appendices (Tas), epididymal anomalies (EAs), and processus vaginalis (PV) patency in patients with undescended testis (UT) according to testicular position and to compare them with human fetuses. Methods We studied 85 patients (108 testes) with cryptorchidism and compared the features with those of 15 fetuses (30 testes) with scrotal testes. W...

Journal: :International endodontic journal 2011
Y-L Ng V Mann K Gulabivala

AIM To investigate the probability of and factors influencing tooth survival following primary (1°RCTx) or secondary (2°RCTx) root canal treatment. METHODOLOGY This prospective study involved annual follow-up of 2 (100%) to 4 years (50%) of 1°RCTx (759 teeth, 572 patients) and 2°RCTx (858 teeth, 642 patients) carried out by Endodontic postgraduate students. Pre-, intra- and post-operative dat...

Journal: :iranian endodontic journal 0
pari ghaziani department of endodontics, school of dentistry, mashhad university of medical sciences, mashhad, iran. [email protected] akbar fallah rastegar department of endodontics, school of dentistry, mashhad university of medical sciences, mashhad, iran maryam bidar department of endodontics, school of dentistry, mashhad university of medical sciences, mashhad, iran ghazal sadeghi department of endodontics, school of dentistry, mashhad university of medical sciences, mashhad, iran parviz chegin endodontist, mashhad, iran

introduction: the ideal endodontic treatment for the teeth with in complete root-ends and necrotic pulps may involve the use of material which forms an immediate apical barrier instead of long term calcium hydroxide therapy. such procedure may lead us to a single appointment endodontic treatment. the purpose of the present study was to evaluate clinical and radiographic success rate in necrotic...

Journal: :iranian endodontic journal 0
hengameh akhavan dental school, islamic azad university of medical science, tehran, iran. anahid ahmadi faculty of dentistry, azad university of medical sciences peyman mehrvarzfar dental school, islamic azad university of medical science, tehran, iran. anahid ahmadi birjandi private practice

introduction : the aim of this study was to examine and compare the apical sealing ability of ah26, ah plus and ah plus jet using a fluid filtration model. materials and methods : 70 single-rooted teeth were dissected from the cement-enamel junction. canals were prepared with protaper rotary system and manual k files and irrigated with 5.25% naocl and 17% edta. ten teeth were assigned as contro...

Journal: :iranian endodontic journal 0
payman mehrvarzfar department of endodontics, dental school, azad university of medical science, tehran, iran. mohammad ali saghiri instructor, kamal asgar research center (karc), mi, usa. kasra karamifar department of endodontics, dental school, azad university of medical science, tehran, iran. zohre khalilak department of endodontics, dental school, azad university of medical science, tehran, iran. nahid maalek private practice, tehran, iran.

introduction: adequate root canal seal following retreatment is essential for a successful outcome. resilon/epiphany (r/e) obturation system has been introduced as a substitute for conventional gutta-percha/sealer method. this in vitro study compared the amount of apical microleakage of r/e with gutta-percha/ah26 (gp/ah26) sealer as secondary root canal filling following retreatment in human te...

Journal: :iranian endodontic journal 0
azar heydari mona rahmani mostafa heydari

instrument breakage during treatment can lead to serious complications and carries the risk of treatment failure. when a file breaks in the canal, bypassing or removal can be difficult and the long-term prognosis of the tooth may be compromised. sometimes surgery may be indicated for removal of the broken segment. often some part of the root cannot be cleaned because of blockage by the broken f...

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